SYNTHESIS, PHOTOPHYSICS AND SENSING PROPERTIES OF A FLUORESCENT AMPHIPHILIC MOLECULAR ROD

摘要

@@Conjugated polyelectrolytes (CPEs), usually composed of rigid-rod polymer backbones and ionic side groups, have been devoted considerable research interest due to their unique properties. However, the aggregated CPEs can rarely be re-dissolved after drying up since the strong π-π* stacking is hard to break up. In addition, the aggregation induces the self-quenching of the polymer fluorescence. While strategies such as the addition of the surfactants into the systems and direct introduction of branched long hydrophilic chains as the pendant groups through the synthetic effort have been developed to circumvent these limitations, very few reports have discussed using component solvents to tune the emission and solubility. We has designed and synthesized a new conjugated polymer, a poly(paraphenyleneethynylene) (PPE) with alternating monomeric building blocks through Sonogashira coupling.